/* =====================================================================
   AURUM 曜金旗舰版 · 主题库
   16 套主题：11 深色 + 5 浅色
   切换方式：<html data-theme="主题id">
   ===================================================================== */

/* ============ 2. 星澜深空蓝金 ============ */
:root[data-theme="starlake"]{
  --obsidian-0:#070b14;--obsidian-1:#0b1220;--obsidian-2:#101a2c;--obsidian-3:#16243c;--obsidian-4:#1e3050;
  --hairline:rgba(150,185,235,.18);--hairline-strong:rgba(150,185,235,.42);
  --surface:rgba(16,26,44,.72);--surface-2:rgba(22,34,56,.85);
  --obsidian-grad:linear-gradient(180deg,#0b1220,#06090f);
  --nav-bg:rgba(8,12,22,.82);
  --card-grad:linear-gradient(160deg,rgba(20,32,52,.88),rgba(10,17,30,.92));
  --card-grad-2:linear-gradient(160deg,rgba(24,40,64,.9),rgba(12,20,36,.94));
  --modal-bg:linear-gradient(165deg,#131d30,#0a1120);
  --input-bg:rgba(6,10,18,.6);--scroll-track:#080c14;
  --footer-bg:linear-gradient(180deg,transparent,rgba(10,20,40,.4));
}

/* ============ 3. 星云紫罗兰 · 神秘 ============ */
:root[data-theme="nebula"]{
  --obsidian-0:#0b0816;--obsidian-1:#120d22;--obsidian-2:#1a1230;--obsidian-3:#241844;--obsidian-4:#301f56;
  --hairline:rgba(190,160,240,.2);--hairline-strong:rgba(190,160,240,.44);
  --surface:rgba(28,18,52,.72);--surface-2:rgba(38,25,66,.85);
  --obsidian-grad:linear-gradient(180deg,#120d22,#070510);
  --nav-bg:rgba(14,9,26,.84);
  --card-grad:linear-gradient(160deg,rgba(34,24,58,.9),rgba(18,12,34,.92));
  --card-grad-2:linear-gradient(160deg,rgba(44,30,74,.9),rgba(22,14,42,.94));
  --modal-bg:linear-gradient(165deg,#1c1432,#0e0920);
  --input-bg:rgba(10,6,20,.6);--scroll-track:#0a0616;
  --footer-bg:linear-gradient(180deg,transparent,rgba(20,12,42,.42));
}

/* ============ 4. 翡翠流翠绿金 · 高级 ============ */
:root[data-theme="emerald"]{
  --obsidian-0:#07100c;--obsidian-1:#0b1712;--obsidian-2:#102018;--obsidian-3:#162e22;--obsidian-4:#1e3c2e;
  --hairline:rgba(140,210,170,.18);--hairline-strong:rgba(140,210,170,.42);
  --surface:rgba(14,34,24,.72);--surface-2:rgba(20,46,33,.85);
  --obsidian-grad:linear-gradient(180deg,#0b1712,#050a08);
  --nav-bg:rgba(7,14,10,.84);
  --card-grad:linear-gradient(160deg,rgba(18,38,28,.9),rgba(10,22,16,.92));
  --card-grad-2:linear-gradient(160deg,rgba(22,50,36,.9),rgba(12,28,20,.94));
  --modal-bg:linear-gradient(165deg,#12241a,#08120d);
  --input-bg:rgba(5,12,9,.6);--scroll-track:#070f0a;
  --footer-bg:linear-gradient(180deg,transparent,rgba(10,30,22,.42));
}

/* ============ 5. 赤焰黑红金 · 炽烈 ============ */
:root[data-theme="crimson"]{
  --obsidian-0:#100707;--obsidian-1:#1a0c0b;--obsidian-2:#24110f;--obsidian-3:#341814;--obsidian-4:#46201a;
  --hairline:rgba(220,150,130,.2);--hairline-strong:rgba(220,150,130,.44);
  --surface:rgba(40,18,14,.72);--surface-2:rgba(54,24,18,.85);
  --obsidian-grad:linear-gradient(180deg,#1a0c0b,#0b0505);
  --nav-bg:rgba(20,8,7,.84);
  --card-grad:linear-gradient(160deg,rgba(46,20,16,.9),rgba(26,12,10,.92));
  --card-grad-2:linear-gradient(160deg,rgba(60,24,18,.9),rgba(32,14,10,.94));
  --modal-bg:linear-gradient(165deg,#271512,#140a08);
  --input-bg:rgba(16,6,5,.6);--scroll-track:#0f0706;
  --footer-bg:linear-gradient(180deg,transparent,rgba(40,14,10,.42));
}

/* ============ 6. 玫瑰金暖粉 · 轻奢 ============ */
:root[data-theme="rose"]{
  --obsidian-0:#140c0f;--obsidian-1:#1e1318;--obsidian-2:#281a21;--obsidian-3:#38242e;--obsidian-4:#482e3a;
  --gold-1:#8a5064;--gold-2:#b87488;--gold-3:#e0a8b8;--gold-4:#f0c8d2;--gold-5:#f8dde4;--gold-6:#fdf0f4;
  --gold-grad:linear-gradient(115deg,#a86a7c 0%,#d99aac 22%,#f7d8de 42%,#d4a0af 58%,#b07888 78%,#e8b8c4 100%);
  --hairline:rgba(224,168,184,.2);--hairline-strong:rgba(224,168,184,.44);
  --surface:rgba(38,24,32,.72);--surface-2:rgba(50,32,42,.85);
  --obsidian-grad:linear-gradient(180deg,#1e1318,#0e080b);
  --nav-bg:rgba(18,10,14,.84);
  --card-grad:linear-gradient(160deg,rgba(42,26,34,.9),rgba(24,15,22,.92));
  --card-grad-2:linear-gradient(160deg,rgba(56,34,44,.9),rgba(30,18,26,.94));
  --modal-bg:linear-gradient(165deg,#2a1b24,#160d13);
  --input-bg:rgba(14,7,10,.6);--scroll-track:#10080c;
  --footer-bg:linear-gradient(180deg,transparent,rgba(40,20,30,.42));
}

/* ============ 7. 赛博霓虹青绿 · 高能 ============ */
:root[data-theme="cyber"]{
  --obsidian-0:#060f0f;--obsidian-1:#0a1818;--obsidian-2:#0f2222;--obsidian-3:#143230;--obsidian-4:#1a4240;
  --gold-1:#1a7a72;--gold-2:#2aa498;--gold-3:#5fe0d4;--gold-4:#9af2e6;--gold-5:#c4f8f2;--gold-6:#e8fcf9;
  --gold-grad:linear-gradient(115deg,#1a8a80 0%,#2fc4b4 22%,#a8f5ec 42%,#3fc8ba 58%,#1a8a80 78%,#7fe8dc 100%);
  --hairline:rgba(90,224,212,.22);--hairline-strong:rgba(90,224,212,.46);
  --surface:rgba(12,36,34,.72);--surface-2:rgba(18,50,47,.85);
  --obsidian-grad:linear-gradient(180deg,#0a1818,#040a0a);
  --nav-bg:rgba(6,16,15,.84);
  --card-grad:linear-gradient(160deg,rgba(14,40,38,.9),rgba(8,22,22,.92));
  --card-grad-2:linear-gradient(160deg,rgba(18,54,50,.9),rgba(10,28,26,.94));
  --modal-bg:linear-gradient(165deg,#0f2624,#071413);
  --input-bg:rgba(4,14,13,.6);--scroll-track:#060f0e;
  --footer-bg:linear-gradient(180deg,transparent,rgba(10,36,34,.42));
}

/* ============ 8. 午夜深邃藏蓝 · 冰蓝光 ============ */
:root[data-theme="midnight"]{
  --obsidian-0:#070a12;--obsidian-1:#0c111c;--obsidian-2:#121828;--obsidian-3:#1a2438;--obsidian-4:#24324c;
  --gold-1:#3a5a86;--gold-2:#5a82b2;--gold-3:#8ab4e0;--gold-4:#bcd8f2;--gold-5:#daeaf8;--gold-6:#eef6fc;
  --gold-grad:linear-gradient(115deg,#3a6a9a 0%,#6a9cc8 22%,#c8e0f5 42%,#7aa6d0 58%,#4a78a8 78%,#a8c8e8 100%);
  --hairline:rgba(140,180,230,.2);--hairline-strong:rgba(140,180,230,.44);
  --surface:rgba(16,26,42,.72);--surface-2:rgba(24,38,60,.85);
  --obsidian-grad:linear-gradient(180deg,#0c111c,#05070d);
  --nav-bg:rgba(8,12,20,.84);
  --card-grad:linear-gradient(160deg,rgba(20,30,48,.9),rgba(10,16,28,.92));
  --card-grad-2:linear-gradient(160deg,rgba(26,40,62,.9),rgba(12,20,32,.94));
  --modal-bg:linear-gradient(165deg,#141e30,#080e18);
  --input-bg:rgba(5,8,14,.6);--scroll-track:#070b12;
  --footer-bg:linear-gradient(180deg,transparent,rgba(14,24,42,.42));
}

/* ============ 9. 熔岩黑橙 · 炽热熔岩 ============ */
:root[data-theme="lava"]{
  --obsidian-0:#100806;--obsidian-1:#1a0e09;--obsidian-2:#24150d;--obsidian-3:#361e10;--obsidian-4:#482814;
  --gold-1:#8a4a18;--gold-2:#b86a24;--gold-3:#e09a50;--gold-4:#f4c084;--gold-5:#fae0bc;--gold-6:#fdf0dc;
  --gold-grad:linear-gradient(115deg,#a85a20 0%,#d88a3c 22%,#f8d0a0 42%,#e09a4c 58%,#b86a28 78%,#f0b878 100%);
  --hairline:rgba(224,154,80,.22);--hairline-strong:rgba(224,154,80,.46);
  --surface:rgba(40,22,10,.72);--surface-2:rgba(56,30,14,.85);
  --obsidian-grad:linear-gradient(180deg,#1a0e09,#0b0503);
  --nav-bg:rgba(18,9,5,.84);
  --card-grad:linear-gradient(160deg,rgba(44,26,12,.9),rgba(26,14,7,.92));
  --card-grad-2:linear-gradient(160deg,rgba(58,32,14,.9),rgba(32,16,7,.94));
  --modal-bg:linear-gradient(165deg,#28180d,#150b06);
  --input-bg:rgba(14,7,4,.6);--scroll-track:#100705;
  --footer-bg:linear-gradient(180deg,transparent,rgba(42,22,8,.42));
}

/* ============ 10. 香槟黑金 · 优雅 ============ */
:root[data-theme="champagne"]{
  --obsidian-0:#0d0c0a;--obsidian-1:#14120e;--obsidian-2:#1c1a14;--obsidian-3:#28251b;--obsidian-4:#363224;
  --gold-1:#9a8044;--gold-2:#c0a658;--gold-3:#e2c890;--gold-4:#f4e4b8;--gold-5:#faf0d2;--gold-6:#fefaf0;
  --gold-grad:linear-gradient(115deg,#a88a44 0%,#d4b868 22%,#faf0d0 42%,#e0c480 58%,#b89848 78%,#ecdca8 100%);
  --hairline:rgba(226,200,144,.22);--hairline-strong:rgba(226,200,144,.46);
  --surface:rgba(34,30,20,.72);--surface-2:rgba(46,40,26,.85);
  --obsidian-grad:linear-gradient(180deg,#14120e,#080705);
  --nav-bg:rgba(12,10,7,.84);
  --card-grad:linear-gradient(160deg,rgba(38,34,24,.9),rgba(22,19,13,.92));
  --card-grad-2:linear-gradient(160deg,rgba(50,44,28,.9),rgba(28,24,15,.94));
  --modal-bg:linear-gradient(165deg,#221e14,#100e09);
  --input-bg:rgba(10,9,6,.6);--scroll-track:#0c0a07;
  --footer-bg:linear-gradient(180deg,transparent,rgba(30,26,16,.42));
}

/* ============ 11. 星河深紫星空 · 紫青 ============ */
:root[data-theme="galaxy"]{
  --obsidian-0:#080612;--obsidian-1:#0e0a1c;--obsidian-2:#161028;--obsidian-3:#20163c;--obsidian-4:#2c1e50;
  --gold-1:#4a3686;--gold-2:#6a52b0;--gold-3:#a890e8;--gold-4:#c8b4f4;--gold-5:#e2d6fa;--gold-6:#f2ecfd;
  --gold-grad:linear-gradient(115deg,#5a44a0 0%,#8468d0 22%,#d8c8f8 42%,#9a7ed8 58%,#6a52b0 78%,#bca4ec 100%);
  --hairline:rgba(168,144,232,.2);--hairline-strong:rgba(168,144,232,.44);
  --surface:rgba(22,16,42,.72);--surface-2:rgba(32,22,58,.85);
  --obsidian-grad:linear-gradient(180deg,#0e0a1c,#05030a);
  --nav-bg:rgba(10,7,20,.84);
  --card-grad:linear-gradient(160deg,rgba(26,18,48,.9),rgba(14,10,28,.92));
  --card-grad-2:linear-gradient(160deg,rgba(34,22,62,.9),rgba(18,12,36,.94));
  --modal-bg:linear-gradient(165deg,#1a1232,#0a0718);
  --input-bg:rgba(7,5,14,.6);--scroll-track:#080610;
  --footer-bg:linear-gradient(180deg,transparent,rgba(18,12,40,.42));
}

/* =====================================================================
   浅色主题（文字转深色，面转浅色）
   ===================================================================== */
:root[data-theme="dawn"],:root[data-theme="sky"],:root[data-theme="sakura"],
:root[data-theme="mint"],:root[data-theme="silver"]{
  --ivory:#241f16;--ivory-dim:#4a4336;--muted:#78705e;--muted-2:#a89f8c;
  --hairline:rgba(60,50,30,.14);--hairline-strong:rgba(60,50,30,.32);
  --input-bg:rgba(255,255,255,.74);
  --gold-grad-soft:linear-gradient(135deg,rgba(180,140,60,.14),rgba(120,90,30,.05));
  --sidebar-bg:linear-gradient(180deg,#fcfaf5,#f4f0e7);
  --terminal-bg:#fbf8f1;
  --terminal-text:#5d5547;
  --toast-bg:rgba(255,253,248,.97);
}

/* ============ 12. 晨曦金流白亮色 · 金色 ============ */
:root[data-theme="dawn"]{
  --obsidian-0:#f6f1e5;--obsidian-1:#f2ecde;--obsidian-2:#ece4d2;--obsidian-3:#e6dcc6;--obsidian-4:#dfd3b8;
  --surface:rgba(255,253,247,.82);--surface-2:rgba(250,245,234,.92);
  --obsidian-grad:linear-gradient(180deg,#f2ecde,#e8e0cc);
  --nav-bg:rgba(248,244,234,.9);
  --card-grad:linear-gradient(160deg,rgba(255,253,248,.92),rgba(248,242,230,.94));
  --card-grad-2:linear-gradient(160deg,rgba(252,246,232,.94),rgba(244,236,220,.96));
  --modal-bg:linear-gradient(165deg,#fdfaf2,#f4ede0);
  --scroll-track:#e6decc;--footer-bg:linear-gradient(180deg,transparent,rgba(180,150,90,.1));
}

/* ============ 13. 晴空蓝浅亮色 · 蓝天 ============ */
:root[data-theme="sky"]{
  --obsidian-0:#eef3f9;--obsidian-1:#e6eef7;--obsidian-2:#dde8f3;--obsidian-3:#d2e0ee;--obsidian-4:#c6d6e8;
  --surface:rgba(255,255,255,.84);--surface-2:rgba(242,247,252,.92);
  --obsidian-grad:linear-gradient(180deg,#e6eef7,#dce7f3);
  --nav-bg:rgba(240,245,250,.9);
  --card-grad:linear-gradient(160deg,rgba(255,255,255,.92),rgba(242,247,252,.94));
  --card-grad-2:linear-gradient(160deg,rgba(246,250,254,.94),rgba(236,243,250,.96));
  --modal-bg:linear-gradient(165deg,#f6f9fd,#e9f0f8);
  --scroll-track:#dde7f1;--footer-bg:linear-gradient(180deg,transparent,rgba(90,130,180,.08));
}

/* ============ 14. 樱花浅粉亮色 · 轻奢 ============ */
:root[data-theme="sakura"]{
  --obsidian-0:#faf1f4;--obsidian-1:#f6e9ee;--obsidian-2:#f0dfe6;--obsidian-3:#ead2dc;--obsidian-4:#e2c4d0;
  --surface:rgba(255,253,254,.84);--surface-2:rgba(250,243,246,.92);
  --obsidian-grad:linear-gradient(180deg,#f6e9ee,#f0e0e6);
  --nav-bg:rgba(250,242,245,.9);
  --card-grad:linear-gradient(160deg,rgba(255,253,254,.92),rgba(250,243,246,.94));
  --card-grad-2:linear-gradient(160deg,rgba(254,246,250,.94),rgba(248,238,244,.96));
  --modal-bg:linear-gradient(165deg,#fdf6f9,#f6e9ef);
  --scroll-track:#efdfe6;--footer-bg:linear-gradient(180deg,transparent,rgba(200,120,150,.08));
}

/* ============ 15. 薄荷绿浅亮色 · 清新 ============ */
:root[data-theme="mint"]{
  --obsidian-0:#eef7f2;--obsidian-1:#e5f2ea;--obsidian-2:#d8ece1;--obsidian-3:#c9e4d5;--obsidian-4:#b8dac8;
  --surface:rgba(255,255,254,.84);--surface-2:rgba(242,249,245,.92);
  --obsidian-grad:linear-gradient(180deg,#e5f2ea,#d9eae1);
  --nav-bg:rgba(238,247,242,.9);
  --card-grad:linear-gradient(160deg,rgba(255,255,254,.92),rgba(242,249,245,.94));
  --card-grad-2:linear-gradient(160deg,rgba(244,252,247,.94),rgba(234,246,239,.96));
  --modal-bg:linear-gradient(165deg,#f5fbf7,#e7f2eb);
  --scroll-track:#d9eae0;--footer-bg:linear-gradient(180deg,transparent,rgba(90,170,130,.08));
}

/* ============ 16. 极光银白浅色明亮 · 高雅 ============ */
:root[data-theme="silver"]{
  --obsidian-0:#f2f4f7;--obsidian-1:#ebedf2;--obsidian-2:#e2e5eb;--obsidian-3:#d6dae2;--obsidian-4:#c8cdd7;
  --surface:rgba(255,255,255,.84);--surface-2:rgba(246,248,251,.92);
  --obsidian-grad:linear-gradient(180deg,#ebedf2,#e1e5ec);
  --nav-bg:rgba(242,244,247,.9);
  --card-grad:linear-gradient(160deg,rgba(255,255,255,.92),rgba(246,248,251,.94));
  --card-grad-2:linear-gradient(160deg,rgba(249,251,253,.94),rgba(238,242,247,.96));
  --modal-bg:linear-gradient(165deg,#f7f9fc,#ebedf3);
  --scroll-track:#e1e5eb;--footer-bg:linear-gradient(180deg,transparent,rgba(90,110,140,.07));
}